It's a good week for … The Titanic

As well as the Olympics and the Jubilee, this year also marks the centenary of the Titanic disaster. Hopefully by now you'll have watched James Cameron's 3D re-release of Titanic, sat through two episodes of Julian Fellowes's Titanic mini-series, baked your special Titanic cakes, and erected bunting decorated with the faces of the real-life people who actually died when the Titanic sank. Because, even though it's an impossibly dubious event to celebrate, television is brimming with Titanic-based programming this week.

Obviously there's the penultimate part of Titanic (Sun, 9pm, ITV1) where, yet again, a bunch of poshos will waffle on self-indulgently for 55 minutes before anything actually happens. But that's just the tip of the iceberg (sorry), because there's another chance to see the improbably cast Titanic With Len Goodman (Sun, 6pm, BBC1), in which the Strictly Come Dancing judge manfully does his best not to interrupt all the poignant tales of bravery and self-sacrifice by bawling the word "SEVEN" into everyone's tearful faces all the time.

Elsewhere, James Cameron takes time out of his busy schedule to reveal that the tragedy extended far beyond Leonardo DiCaprio's haircut in Titanic: Final Word With James Cameron (Sun, 8pm, Nat Geo). He's made over 30 dives to explore the Titanic over the years, so he's well-placed to explain exactly what went wrong. The press release promises that this documentary will alter your fundamental interpretations of exactly what happened to the Titanic. But even if that doesn't happen, you'll still be able to marvel at Titanic historian Bill Sauder, who sports what is perhaps the world's most extravagantly luxurious beard. It's a win-win.

In fact, National Geographic is home to some of the best – and most intelligent – Titanic programming of the week, since it also has Save The Titanic With Bob Ballard (Mon, 8pm) and Titanic: Case Closed (Tue, 8pm). Why not watch both, while wondering what type of silly mini-series TV will cook up to mark the centenary of, say, the Fukushima nuclear disaster.